gdb security update

CentOS Errata and Security Advisory CESA-2005:709

GDB, the GNU debugger, allows debugging of programs written in C, C++,
and other languages by executing them in a controlled fashion, then
printing their data.

Several integer overflow bugs were found in gdb. If a user is tricked
into processing a specially crafted executable file, it may allow the
execution of arbitrary code as the user running gdb. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2005-1704 to this issue.

A bug was found in the way gdb loads .gdbinit files. When a user executes
gdb, the local directory is searched for a .gdbinit file which is then
loaded. It is possible for a local user to execute arbitrary commands as
the victim running gdb by placing a malicious .gdbinit file in a location
where gdb may be run. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2005-1705 to this issue.

This updated package also addresses the following issues:

• GDB on ia64 had previously implemented a bug fix to work-around a kernel
  problem when creating a core file via gcore. The bug fix caused a
  significant slow-down of gcore.

• GDB on ia64 issued an extraneous warning when gcore was used.

• GDB on ia64 could not backtrace over a sigaltstack.

• GDB on ia64 could not successfully do an info frame for a signal trampoline.

• GDB on AMD64 and Intel EM64T had problems attaching to a 32-bit process.

• GDB on AMD64 and Intel EM64T was not properly handling threaded watchpoints.

• GDB could not build with gcc4 when -Werror flag was set.

• GDB had problems printing inherited members of C++ classes.

• A few updates from mainline sources concerning Dwarf2 partial die in
  cache support, follow-fork support, interrupted syscall support, and
  DW_OP_piece read support.

All users of gdb should upgrade to this updated package, which resolves
these issues.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2005-October/074405.html
https://lists.centos.org/pipermail/centos-announce/2005-October/074408.html

Affected packages:
gdb

Upstream details at:
https://access.redhat.com/errata/RHSA-2005:709